Known as "screeners", free copies are sent to members of the Emmy academy to urge them to vote for your programme. Screeners are not supposed to ever reach the public, but I've seen quite a number of these on eBay over the years. AS you can see, this Star Wars documentary was submitted in the category of "Outstanding Nonfiction Special".

This screener came on a piece of cardboard, with the disc affixed with a foam rubber hub.